请高手看看我的Java程序怎么了

来源：互联网发布：美国弗吉尼亚大学知乎编辑：程序博客网时间：2024/04/27 19:14

//package cn.com;

import java.util.*;
import java.awt.*;
import java.awt.event.*;

import sun.org.mozilla.javascript.internal.Interpreter;

import com.sun.org.apache.xerces.internal.impl.xs.identity.Selector.Matcher;

public class Hello extends Frame implements ActionListener, WindowListener {
private TextField text_input, text_output;

private Button button_ok, button_cancel;

private Dialog dialog;

private Label label_dialog;

public Hello() {
super("整数排序程序");

  this.setSize(400, 200);
  this.setResizable(false); // 窗口大小不能改变
  this.setBackground(java.awt.Color.lightGray);
  this.setLocation(300, 240);
  this.setLayout(new java.awt.FlowLayout(FlowLayout.LEFT)); // 流布局且左对齐

this.add(new Label("输入"));

  text_input = new TextField(100);
  this.add(text_input);
  text_input.addActionListener(this); // 为文本行注册单击事件监听器

  this.add(new Label("输出"));
  text_output = new TextField(100);
  text_output.setEditable(false); // 只能显示，不允许编辑
  this.add(text_output);

  button_ok = new Button("排序");
  this.add(button_ok);
  button_ok.addActionListener(this); // 为按钮注册单击事件监听器

  button_cancel = new Button("重置");
  this.add(button_cancel);
  button_cancel.addActionListener(this); // 为按钮注册单击事件监听器

this.addWindowListener(this); // 为框架注册事件监听器，委托当前类的对象处理事件
this.setVisible(true);

  dialog = new Dialog(this, "提示", true); // 模式窗口
  dialog.setSize(300, 80);
  label_dialog = new Label("", Label.CENTER); // 标签的字符串为空，居中对齐
  dialog.add(label_dialog);
  dialog.addWindowListener(this); // 为对话框注册窗口事件监听器

}

public void Numbersort() throws Exception {
  ArrayList list = new ArrayList();
  Scanner input = new Scanner(System.in);// 创建一个键盘扫描类对象
  String in = text_input.getText();
  int index;
  for (int j = 0; j < in.length(); j = index + 1) {
   index = in.indexOf(in, j);
   if (index == -1) {
    list.add(Integer.valueOf(in.substring(j, in.length())));
    break;
   }
   list.add(Integer.valueOf(in.substring(j, index)));

}

  Collections.sort(list);
  String a = list.toString();
  text_output.setText(a);

}

public void actionPerformed(ActionEvent e) // 按钮单击、文本行中单击回车键
{
  if (e.getSource() == button_cancel) // 获得产生事件的对象
   text_input.setText("");
  if (e.getSource() == button_ok) {
   try {
    Numbersort();
   } /*catch (NumberFormatException nfe) {
    label_dialog.setText("/"" + text_input.getText() + "/""
      + "所输入的数不全是整数，请重新输入!");
    dialog.setLocation(this.getX() + 100, this.getY() + 100);
    dialog.setVisible(true);
   }*/ catch(Exception ce){

   }
   finally {
   }
  }
}

public void windowClosing(WindowEvent e) {
  if (e.getSource() == dialog)
   dialog.setVisible(false); // 隐藏对话框
  else
   System.exit(0);
}

public static void main(String[] args) {
new Hello();

}

public void actionPerformed(WindowEvent e) {
}

public void windowActivated(WindowEvent e) {
}

public void windowClosed(WindowEvent e) {
}

public void windowDeactivated(WindowEvent e) {
}

public void windowDeiconified(WindowEvent e) {
}

public void windowIconified(WindowEvent e) {
}

public void windowOpened(WindowEvent e) {
}

}

不知道为什么每次都抛出异常